From Amazon: Linsoul KZ ZS10 Pro 4BA+1DD 5 Driver in-Ear HiFi Metal Earphones with Stainless Steel Faceplate, 2 Pin Detachable Cable (Without Mic, Purple) The KZ ZS10 Pro, an enhanced iteration of the renowned KZ ZS10, boasts custom-tuned balanced armatures. This expertly crafted configuration delivers an audio experience that is remarkably dynamic, transient, and brilliantly bright in all aspects.